--- rat/lonsequence.pm	2017/09/03 18:52:23	1.47
+++ rat/lonsequence.pm	2018/04/14 17:52:53	1.50
@@ -2,7 +2,7 @@
 #
 # Sequence Handler
 #
-# $Id: lonsequence.pm,v 1.47 2017/09/03 18:52:23 raeburn Exp $
+# $Id: lonsequence.pm,v 1.50 2018/04/14 17:52:53 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,6 +36,7 @@ use Apache::lonnet;
 use Apache::Constants qw(:common :http REDIRECT);
 use GDBM_File;
 use LONCAPA::map();
+use LONCAPA::ltiutils;
 use LONCAPA;
 use Apache::lonpageflip();
 use Apache::loncommon();
@@ -251,16 +252,32 @@ sub handler {
            if (ref($navmap)) {
                # renderer call
                if (&Apache::lonnet::is_on_map($requrl)) {
+                   my ($ltiscope,$ltiuri);
+                   if (($env{'request.lti.login'}) && ($env{'request.lti.uri'})) {
+                       my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+                       my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+                       ($ltiscope,$ltiuri) = &LONCAPA::ltiutils::lti_provider_scope($env{'request.lti.uri'},$cdom,$cnum);
+                   }
                    my $mapurl = &Apache::lonnet::declutter($requrl);
-                   my @crumbs = ({text  => $crstype.' Contents',
-                                  href  => "javascript:gopost('/adm/navmaps','')"});
-                   my $res = $navmap->getResourceByUrl($mapurl);
-                   if (ref($res)) {
-                       my ($parent) = &Apache::lonnet::decode_symb($res->symb());
-                       if ($parent ne $env{'course.'.$env{'request.course.id'}.'.url'}) {
-                           my @mapcrumbs = $navmap->recursed_crumbs($parent);
-                           if (@mapcrumbs) {
-                               push(@crumbs,@mapcrumbs);
+                   my @crumbs;
+                   unless ($ltiscope eq 'resource') {
+                       unless ($ltiscope eq 'map') {
+                           @crumbs = ({text  => $crstype.' Contents',
+                                       href  => "javascript:gopost('/adm/navmaps','')"});
+                       }
+                       my $res = $navmap->getResourceByUrl($mapurl);
+                       if (ref($res)) {
+                           my $symb = $res->symb();
+                           if ($symb) {
+                               my ($parent) = &Apache::lonnet::decode_symb($res->symb());
+                               if (($parent ne $env{'course.'.$env{'request.course.id'}.'.url'}) &&
+                                   !(($ltiscope eq 'map') && ($requrl eq $ltiuri))) {
+                                   my @mapcrumbs = $navmap->recursed_crumbs($parent);
+                                   if (@mapcrumbs) {
+                                       push(@crumbs,@mapcrumbs);
+                                   }
+                               }
+                               $env{'request.symb'} = $symb;
                            }
                        }
                    }